Question on the depth of depth charges

[nazaka]

Hey, guys,

I'm wondering with the TWOS mod: is the defect of the Mark 7 depth charges present?
According to Wiki ( https://en.wikipedia.org/wiki/Depth_charge , it's not the top source level but I made it as simple as possible), they only went up to 76m (in the game, during the loading of the game, facts/quotes are present to pass the time. However, one of them deals with this subject and announces that these Mk 7 grenades only went up to 91m)

Anyway, in any case, I would like to know if it is well represented in the game.

And more importantly, if so, until when?

The wiki link announces that at the end of 1940, an improvement of these grenades with a ballast allowed an increase of the maximum depth to 900 feet, or about 275m.
Is this the case?

Thanks


PS: Sorry if my handwriting's weird, I use a translator.

[nazaka]

Nobody?

[kapuhy]

Hi,

Vecko, TWOS author, would probably know but recently he's been visiting less frequently than usual. If you'd like to know quickly, best bet would be to create a single mission with Mark7 armed destroyer on top of your boat, go below 75 meters and make a lot of noise. I'll probably be running some tests in SH5 later today, I might check it if nobody answers until then.

[nazaka]

That's smart.

I'm gonna see if I can get myself that custom mission to test it out.

Thanks for the idea.

[nazaka]

Okay, first result, with grenadage at 1940:
above -130 meters, my sub takes some serious damage in one pass. The ballast tanks are ripped open, I sink to the bottom.
At -130m, it takes two/three passes to damage the submarine enough to sink it. One pass damages me, but moderately.
At -135 meters, no damage.

Test protocol: submarine at half speed, I make a circle while the DD picks me up.
I consider the test conclusive if the submarine gets away with no damage after one hour.

For grenadage at, nothing to do, even at -235m (very close to the submarine's breaking point), I get severely hit by the grenades.


I wonder if the depth charges haven't been buffed by the modders...


http://www.navweaps.com/Weapons/WAMBR_ASW.php#Mark_VII
In 1939, the Mark VII had a maximum depth of 91m:

The link indicates a depth of 500 feet (182m) for a later version, with no date indicated. Any ideas?


http://www.navweaps.com/Weapons/WAMB...Mark_VII_Heavy

The mark VII heavy debuted at 1940 and only increase the rate of descent of the Mark VII.


http://www.navweaps.com/Weapons/WAMB...2A_and_X%2A%2A

In 1942, the first version of Mark X made its debut. It was slow to descend and had to be launched from a torpedo launcher. The indicated depth of 220 feet is really insufficient against uboats that have had time to submerge deeply.


http://www.navweaps.com/Weapons/WAMB...2A_and_X%2A%2A

We have to wait until 1943 to see the entry into service of an underwater charge really dangerous for deep-diving uboats.

Fast, the Mark X version 2 reaches a depth of 640 feet.
On the other hand, it uses TNT as an explosive. Despite its heavy weight, the destructive range is only slightly increased compared to the Mark VII (also using TNT).

The killing radius of a depth charge depends on the depth of detonation, the proximity of detonation to the submarine, the payload of the depth charge and the size and strength of the submarine hull. A depth charge of approximately 100 kg of TNT (400 MJ) would normally have a killing radius (hull breach) of only 3–4 meters (10–13 ft) against a conventional 1000-ton submarine, while the disablement radius (where the submarine is not sunk but put out of commission) would be approximately 8–10 meters (26–33 ft). A larger payload increases the radius only relatively little because the effect of an underwater explosion decreases as the cube of the distance to the target.

Source: https://www.wikiwand.com/en/Depth_ch...EFCampbell1985